Nest thermostat Installation Wiring
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A wiring diagram is a simple visual representation from the physical connections and physical layout of an electrical system or circuit. It shows how the electrical wires are interconnected and can also show where fixtures and components may be attached to the system.

When and How to Use a Wiring Diagram

Use wiring diagrams to assistance with building or manufacturing the circuit or digital camera. They are also useful for making repairs.

DIY enthusiasts use wiring diagrams but you are also common in home based building and auto repair.

For example, a house builder will want to look at the physical location of electrical outlets and light fixtures employing a wiring diagram to avoid costly mistakes and building code violations.

How can be a Wiring Diagram Different from your Schematic?

A schematic shows the master plan and function with an electrical circuit, but is not concerned with the physical layout in the wires. Wiring diagrams show what sort of wires are connected and where they must perfectly located at the actual device, along with the physical connections between every one of the components.

How is a Wiring Diagram Different from your Pictorial Diagram?

Unlike a pictorial diagram, a wiring diagram uses abstract or simplified shapes and lines to demonstrate components. Pictorial diagrams will often be photos with labels or highly-detailed drawings in the physical components.

Standard Wiring Diagram Symbols

If a line touching another line has a black dot, this means the lines are connected. When unconnected lines are shown crossing, you’ll see a line hop.

Most symbols used on a wiring diagram seem like abstract versions with the real objects they represent. For example, a switch would have been a enter the road having a line at an angle on the wire, much like an easy switch you are able to flip don and doff. A resistor is going to be represented with a number of squiggles symbolizing the restriction of current flow. An antenna is often a straight line with three small lines branching off at its end, similar to a real antenna.

Wiring diagram symbols

Wire, conducts current

Fuse, disconnect when current exceeds a certain amount

Capacitor, accustomed to store electric charge

Toggle Switch, stops the flow of current when open

Push Button Switch, momentarily allows current flow when button is pushed in, breaks current when released

Battery, stores electric charge and generates a constant voltage

Resistor, restricts current flow

Ground wire, useful for protection

Circuit breaker, accustomed to protect a circuit from an overload of current

Inductor, a coil that generates a magnetic field

Antenna, transmits and receives radio waves

Surge protector, used to protect a circuit from a spike in voltage

Lamp, generates light when current flows through

Diode, allows current circulation in one direction indicated by an arrowhead or triangle for the wire